GB20287-2006
Microbial inoculants in agriculture
农用微生物菌剂
GB 20287-2006 is a current mandatory Chinese national standard for Microbial inoculants in agriculture. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Sep 1, 2006.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to agricultural microbial inoculants used to improve soil, promote plant growth, and degrade toxic substances. It covers various product types including rhizobium inoculants, azotobacter inoculants, phosphate-solubilizing microbial inoculants, and organic matter decomposing inoculants in liquid, powder, and granular forms. It is essential for manufacturers and importers of agricultural biological products entering the Chinese market. The standard references GB/T 19524.1 and GB/T 19524.2 for safety parameters.
Technical requirements
The standard mandates that production microbial strains must be safe and effective, requiring complete classification identification reports and safety evaluation data. For appearance, powder products must be loose, while granular products should be uniform with water absorbency and free of mechanical impurities. It specifies technical parameters for different formulations, including effective viable count, mold and miscellaneous bacteria counts, moisture content, fineness, and pH values. Products must meet strict limits on contamination rates to ensure viability and efficacy. For organic matter decomposing inoculants, specific enzyme activities such as cellulase and protease are regulated. The standard also sets harmless technical indicators to ensure environmental and human safety. These include limits on fecal coliforms, ascaris egg mortality, and heavy metals like arsenic, cadmium, lead, chromium, and mercury. Compliance with these safety limits is mandatory for all regulated products.
Testing methods
Testing involves plate counting methods and the dilution method (MPN 5-tube method) for determining the effective viable count of microorganisms. Physical parameters such as moisture, fineness, and pH are measured using standard drying, sieving, and pH meter techniques. Safety parameters are tested according to referenced standards, while enzyme activities are evaluated using specific colorimetric and hydrolytic methods. Manufacturers must ensure their testing facilities can perform these microbiological and chemical assays.
FAQs
What products are regulated under GB 20287-2006?
It regulates agricultural microbial inoculants, including rhizobium, azotobacter, photosynthetic bacteria, and organic matter decomposing agents in liquid, powder, or granular forms.
Are there any mandatory clauses in this standard?
Yes, clauses regarding strain safety, product technical indicators, and packaging/labeling are mandatory, while others are recommended.
Does the standard require heavy metal testing?
Yes, the standard includes harmless technical indicators that set strict limits on heavy metals such as arsenic, cadmium, lead, chromium, and mercury, referencing GB 18877-2002 for testing methods.
The summary above provides a high-level overview of GB 20287-2006. To ensure complete compliance for your agricultural microbial products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 20287-2006 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- B13
- ICS
- 65.100.01
- Competent department
- Ministry of Agriculture and Rural Affairs
- Technical committee
- Ministry of Agriculture and Rural Affairs